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  1. #1

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    The "Budget Bomber" gets a new best, and the stock-ECU record?

    After a failed maiden voyage on the new turbo, I fixed the problem (a backed out prop bolt) and headed back out today.

    At the baseline boost setting (15 psi), I made lots of passes in the 82.x range, with the best being 82.9 mph. I tried to raise the boost, since I was only turning 7900-7950 rpm, but I apparently hooked up my boost controller backwards so I was stuck with 15 psi.

    For those that haven't kept up with the build. . .

    '04 RXP
    GT32 turbo @ 15 psi (home-built jacketed stainless piping)
    XS intercooler with the outlet mod
    AEMPower F/IC and 62# injectors (piggyback to the stock ECU)
    Riva Grate
    Skat-Trak 15.5/23 3-blade prop
    81 mm nozzle
    Filled RP holes, trimmed bucket

    As of now, all the parts were purchased new and I have a total of just under $2,400 in mods (but lots of elbow-grease). I think I can dial in 1-2 psi more boost and hit 85 on the nose before I run out of prop and injector.

    Thanks to GPRyan for towing me back the other day, and coming out as safety-watch today.

    By the way, I think the "official" stock-ECU record belongs to JD1 for pulling about 84.5 at Mudbug.

    Mike


  2. #2
    REID2168's Avatar
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    great job!

  3. #3
    BLACK MAGIC HEADERS hydrojunkie's Avatar
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    what spring is in your waste gate. if it is a 1/2 bar spring " 7 psi" it will only build 15psi. i messed up too on that.

  4. #4
    ARNYGOLLOTT3's Avatar
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    Congrats and good luck and thanks for all your information sharing!

  5. #5
    Ride Hard! aha's Avatar
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    Mike thats awesome!!!

  6. #6

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    Thanks, guys!

    And hydro, I thought I read that it's a 7 psi spring, but it sure acts more like a 15 since I can't get below 15 psi boost.

  7. #7
    JD 1's Avatar
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    congrats Mike cant wait til you break 85mph

  8. #8
    BLACK MAGIC HEADERS hydrojunkie's Avatar
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    Quote Originally Posted by engineermike View Post
    Thanks, guys!

    And hydro, I thought I read that it's a 7 psi spring, but it sure acts more like a 15 since I can't get below 15 psi boost.
    the 7 psi will only build upto 15 then the gate opens. trust me change your spring if that is what you have. if you get a 1 bar spring it will build upto 28 and change. i went through that this weekend end.

  9. #9
    Mike what is part # of aem f/ic
    thanks

  10. #10

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    Quote Originally Posted by hydrojunkie View Post
    the 7 psi will only build upto 15 then the gate opens. trust me change your spring if that is what you have. if you get a 1 bar spring it will build upto 28 and change. i went through that this weekend end.
    I'm going to bleed off wastegate signal pressure first. I think that'll do the trick. I only need 1-2 more psi. If that doesn't work, I can easily shorten the wastegate rod.

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